Home / 752,923.20-1,129,384.80-254,287.20

Finding the Fourth Proportional to 752,923.20, 1,129,384.80 and 254,287.20

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Solution

The fourth proportional to 752,923.20, 1,129,384.80 and 254,287.20 is: 381,430.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    752,923.20 : 1,129,384.80 = 254,287.20 : x
  2. Step 2: Convert to fraction form
    752,923.20/1,129,384.80 = 254,287.20/x
  3. Step 3: Cross multiply
    752,923.20x = 1,129,384.80 × 254,287.20
  4. Step 4: Simplify right side
    752,923.20x = 287,188,098,514.56
  5. Step 5: Solve for x
    x = 287,188,098,514.56/752,923.20
  6. Step 6: Final answer
    x = 381,430.80

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.